AMD Phenom II X4 840 vs Intel Core i7-940

Comparative analysis of AMD Phenom II X4 840 and Intel Core i7-940 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - Video Composition (Frames/s).

 

Differences

Reasons to consider the AMD Phenom II X4 840

  • CPU is newer: launch date 2 year(s) 2 month(s) later
  • Around 5% higher maximum core temperature: 71°C vs 67.9°C
  • 2x more L1 cache, more data can be stored in the L1 cache for quick access later
  • 2x more L2 cache, more data can be stored in the L2 cache for quick access later
  • Around 37% lower typical power consumption: 95 Watt vs 130 Watt
  • 5.7x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 2.92 vs 0.508
  • Around 67% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 3.91 vs 2.347
Specifications (specs)
Launch date January 2011 vs November 2008
Maximum core temperature 71°C vs 67.9°C
L1 cache 512 KB vs 64 KB (per core)
L2 cache 2 MB vs 256 KB (per core)
Thermal Design Power (TDP) 95 Watt vs 130 Watt
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 2.92 vs 0.508
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 3.91 vs 2.347

Reasons to consider the Intel Core i7-940

  • 4 more threads: 8 vs 4
  • Around 1% better performance in PassMark - Single thread mark: 1310 vs 1298
  • Around 22% better performance in PassMark - CPU mark: 2947 vs 2414
  • Around 31% better performance in Geekbench 4 - Single Core: 512 vs 391
  • Around 49% better performance in Geekbench 4 - Multi-Core: 1971 vs 1325
  • 3.6x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 32.258 vs 8.884
  • Around 20% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.191 vs 0.159
Specifications (specs)
Number of threads 8 vs 4
Benchmarks
PassMark - Single thread mark 1310 vs 1298
PassMark - CPU mark 2947 vs 2414
Geekbench 4 - Single Core 512 vs 391
Geekbench 4 - Multi-Core 1971 vs 1325
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 32.258 vs 8.884
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.191 vs 0.159

Compare benchmarks

CPU 1: AMD Phenom II X4 840
CPU 2: Intel Core i7-940

PassMark - Single thread mark
CPU 1
CPU 2
1298
1310
PassMark - CPU mark
CPU 1
CPU 2
2414
2947
Geekbench 4 - Single Core
CPU 1
CPU 2
391
512
Geekbench 4 - Multi-Core
CPU 1
CPU 2
1325
1971
CompuBench 1.5 Desktop - Face Detection (mPixels/s)
CPU 1
CPU 2
2.92
0.508
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)
CPU 1
CPU 2
8.884
32.258
CompuBench 1.5 Desktop - T-Rex (Frames/s)
CPU 1
CPU 2
0.159
0.191
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)
CPU 1
CPU 2
3.91
2.347
Name AMD Phenom II X4 840 Intel Core i7-940
PassMark - Single thread mark 1298 1310
PassMark - CPU mark 2414 2947
Geekbench 4 - Single Core 391 512
Geekbench 4 - Multi-Core 1325 1971
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 2.92 0.508
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 8.884 32.258
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.159 0.191
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 3.91 2.347
CompuBench 1.5 Desktop - Video Composition (Frames/s) 0.84

Compare specifications (specs)

AMD Phenom II X4 840 Intel Core i7-940

Essentials

Architecture codename Propus Bloomfield
Family AMD Phenom
Launch date January 2011 November 2008
Launch price (MSRP) $90 $299
OPN PIB HDX840WFGMBOX
OPN Tray HDX840WFK42GM
Place in performance rating 2861 2854
Price now $89.95 $70.70
Series AMD Phenom II X4 Legacy Intel® Core™ Processors
Value for money (0-100) 11.50 22.33
Vertical segment Desktop Desktop
Processor Number i7-940
Status Discontinued

Performance

64 bit support
Base frequency 3.2 GHz 2.93 GHz
Die size 169 mm 263 mm2
L1 cache 512 KB 64 KB (per core)
L2 cache 2 MB 256 KB (per core)
Manufacturing process technology 45 nm 45 nm
Maximum core temperature 71°C 67.9°C
Maximum frequency 3.2 GHz 3.20 GHz
Number of cores 4 4
Number of threads 4 8
Transistor count 300 million 731 million
Unlocked
Bus Speed 4.8 GT/s QPI
Front-side bus (FSB) 1333 MHz
L3 cache 8192 KB (shared)
Number of QPI Links 1
VID voltage range 0.800V-1.375V

Memory

Supported memory types DDR3 DDR3 800/1066
Max memory channels 3
Maximum memory bandwidth 25.6 GB/s
Maximum memory size 24 GB

Compatibility

Max number of CPUs in a configuration 1 1
Sockets supported AM3 FCLGA1366
Thermal Design Power (TDP) 95 Watt 130 Watt
Low Halogen Options Available
Package Size 42.5mm x 45.0mm

Security & Reliability

Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel® SSE4.2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE) 36-bit
Thermal Monitoring

Virtualization

Intel® Virtualization Technology (VT-x)
Intel® VT-x with Extended Page Tables (EPT)